Key result
The decorrelation flow velocity measurement method demonstrated more accurate prediction of the flow velocity gradient at the wall edge than the correlation-based lateral speckle-tracking method.
Population
Physiologic flows ranging from 50 to 1000 mm/s (experimental model)
Comparison
Ultrasound speckle decorrelation-based flow… vs Correlation-based lateral speckle-tracking…
Design
Preclinical
Authors
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May improve near-wall velocity assessment in animal models; leaves open clinical validation for wall shear stress.
Speckle decorrelation-based flow velocity measurements provide higher axial spatial resolution than Doppler ultrasound, enabling more accurate measurement of blood velocity near a vessel wall and determination of wall shear stress.
Park et al. (2013) studied this question. Ultrasound speckle decorrelation-based flow velocity measurement vs. Correlation-based lateral speckle-tracking method was evaluated on Flow velocity gradient at the wall edge. The decorrelation flow velocity measurement method demonstrated more accurate prediction of the flow velocity gradient at the wall edge than the correlation-based lateral speckle-tracking method.
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